Aqueous compositions for cleaning gas turbine compressor blades
Active Publication Date: 2005-03-03
GENERAL ELECTRIC CO
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- Description
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- Application Information
AI Technical Summary
Benefits of technology
[0009] The present invention relates to a gas turbine cleaning composition comprising a mixture of (a) a glycol alkyl ether compound, (b) an alkoxylated surfactant with an alkyl chain length of from about 3 to 18 carbons and (c) a metal corrosion inhibitor component. The present invention further relates to a method of cleaning a gas turbine compressor and / or the blades thereof during power generation without significant loss of power, which comprises contacting the surfaces to be cleaned with a cleaning composition comprising a mixture of (a) a glycol alkyl ether compound, (b) an alkoxylated surfactant with an alkyl chain length of from about 3 to 18 carbons and (c) a metal corrosion inhibitor component.
Problems solved by technology
However, as a result of continuous operation, contaminants build up on the leading edge of these air foils.
Consequently, overall efficiency is lost in the compressor section.
This in turn reduces the horsepower available for consumer use.
However, with the massive amounts of air passing through the turbine, these contaminants are multiplied.
Moreover, the air enters the turbine at room temperature and leaves the compressor at approximately 630° F. Most of the lost efficiency is across the first three or four stages, and it is very difficult to clean the blades once the contaminants have adhered to them.
However, current cleaning products have several disadvantages.
These disadvantages include excessive foaming, extended soaking periods, low water solubility, and residual cleaner.
Current products cure some of these disadvantages; however, none have been able to cure all of these properties.
Method used
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Embodiment Construction
[0010] The present invention is directed to a gas turbine cleaner. In particular, the cleaner of the present invention is described as a composition. The composition of the present invention comprises a glycol alkyl ether compound and an alkoxylated surfactant with an alkyl chain length of from about 3 to 18 carbons. The present composition may also contain a metal corrosion inhibitor component.
[0011] The present invention is also directed to a process for cleaning a substrate comprising providing a cleaning solution according to the present invention and contacting the cleaning solution with the substrate to be cleaned.
[0012] Specifically, the present invention relates to cleaning agent compositions useful for the cleaning of gas turbine compressor blades. The aqueous cleaning solution of the present invention is applied in order to effectively remove foulants which are deposited in gas turbine compressors, as well as to effectively clean the compressor. Note that the particular ...
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Abstract
Description
BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a chemical cleaning solution for gas turbine blades. In particular, the present invention relates to a cleaning composition comprising a glycol alkyl ether compound, a solvent and a metal corrosion inhibitor component. [0003] 2. Description of the Prior Art [0004] Industrial gas turbine engines are used worldwide. An example of a gas turbine is a Mars Gas Turbine or a Taurus 70 Gas Turbine, manufactured by Solar Turbines, Inc. A Mars turbine has a 15 stage compressor and each stage is comprised of a stationary row of blades (stator blades) and a rotating row of blades. The blades are the largest at stage 1 and the smallest at stage 15. During operation, air is drawn into the compressor's divergent passage and compressed through every stage. [0005] The stator blades direct the compressed air at each stage across its companion row of rotating blades. The air foil of the stator and rota...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C11D1/72C11D3/00C11D3/20C11D3/28C11D3/30C11D3/33C11D3/36C11D11/00C23G1/24C23G1/26F01D25/00
CPCC11D1/72C11D3/0073C11D3/2068C11D3/28C11D3/30F01D25/002C11D3/364C11D11/0041C23G1/24C23G1/26C11D3/33C11D2111/20C11D3/20
InventorYAN, LAIBINFILLIPO, BRUCE K.
OwnerGENERAL ELECTRIC CO